And oscar walfrid hult



2 Sheets+Sheet 1.

(N0 Model.)

0. A. & 0. W. HULT. OENTRIFUGAL CREAM SEPAEATOR.

Patented Apr. 22, 1890.

A TTORA/EYS WITNESSES: 9%% @MM.

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(No Model.) 2 Sheets-Sheet 2.

O. A. 85 0. W. HULT. CENTRIFUGAL CREAM SEPARATOR.

No. 426,275. atentedApr. 22, 1890.

WITNESSES: INVENTOR- 6.1M

ATTORNEYS.

UNITED STATES PATENT OFFICE.

CARL ALRIOK HULT, OF DENVER, COLORADO, AND OSCAR \VALFRID I'IULT,

OF NEV YORK, N. Y.

CENTRIFUGAL CREAM-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 426,275, dated April22, 1890.

Application filed August 7, 1,889-

To all whom it "may concern.-

Be it known that we, CARL ALRIGK HULT, of Denver, in the county ofArapahoe and State of Colorado, and OsoAR WALERID HULT, of the city,county, and State of New York, have invented a new and ImprovedCentrifugal Cream-Separator, of which the following is a full, clear,and exact description.

This invention relates to an improvement in cream-separators, and hasfor its objectto provide a device of simple, durable, and economicalconstruction capable of being conveniently and easily manipulated, andwhereby the driving mechanism may be manipulated with the least possibleamount of friction.

The invention consists in the novel construction and combination of theseveral parts, as'will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a side elevation of the apparatus. Fig. 2 is a transversesection on line a: a: of Fig. 1. Fig. 3 is a central. vertical sectionthrough the cream-separating chamber, and Fig. 4 is a transverse sectionthrough said chamber on line y y of Fig. 3.

From one side of a base a standard 11 projects perpendicularly, and abracket 12 is formed integral with the front face of the said standardat or near the upper end. Upon the top of the standard 11 a secondbracket 13 is bolted or otherwise rigidly secured, which bracket isprovided with a head suitably constructed for sustaining in an uprightposition a can 1%, adapted to contain milk.

The horizontal bracket 12 is provided with an upwardly-extending,preferably cylindrical, post 15, and upon the said post a can, drum, orother vessel 16 is secured, havinga detachable top or cover 17, whichtop or cover is provided with a neck 18, extending from the top at thecenter, and the bottom of the cover within the said neck is apertured,and around the walls of the aperture a downweirdly-extending spout 19 isattached.

The bottom of the drum 16, which drum is Serial No. 319,988. (No model.)

preferably cylindrical and constructed of sheet metal, is conical, asillustrated at 20 in Fig. 3, and the said conical bottom is open at thecenter and the metal bent downward to form a lower neck or sleeve 21,which neck or sleeve is of sufficient diameter to slide freely over thepost 15 of the bracket, to which post it is attached by means of asetscrew or other equivalent device.

The drum 16 is provided with an upwardlyinclined annular flange 22,secured to the inner walls, which flange is spaced somewhat from thebottom, as illustrated in Fig. 3, the flange and bottom being parallel.

From the under side of the drum 16 a spout 23 proj ects outwardly anddownwardly, the lower wall of which spout is attached to the flange 22,as illustrated at the right in Fig. 3, and from the opposite side of thedrum a second spout 21 projects, the base- Wall of which spout is inalignment with the bottom of the drum, the upper wall being below theflange 22.

In aperpendicularbore produced in the post 15 and the surface of thebracket immediately under the post a perpendicular shaft 25 isjournaled, which shaft extends above and below the post and bracket, andto the lower end of the shaft a bevel friction-wheel 26 is detachablysecured. The upper end of the shaft immediately above the top of thepost 15 is provided with a base or base-plate 27, extending outward at aright angle to the shaft 25, and the said shaft is made to terminate atthe upper extremity in an essentiallyconical head 28, the upper portionof which head is exteriorly threaded. The head is provided with aninterior essentially-conical bore to form a spreader-chamber 29. Bymeans of this bore the base-wall of the chamber represents a cone, andinto the upperend of the spreader-chamber, which is open, the spout 19of the drum 16 extends, as is best illustrated in Fig. 3, while fromopposite sides of the base-wall of the chamber spouts 30 projectdownwardly and outwardly. The baseplate 27 of the shaft is provided uponits upper face with an integral marginalflange 31, with which flange andthe lower end of an inner cylindrical receptacle 32 a tight joint iseffected, or the receptacle may be otherwise made to constitute thebottom of the inner receptacle. The said inner receptacle is forciblyheld in contact with this bottom or base by means of a lock-nut 33,screwed upon the exteriorly-threaded surface of the shaft-head to acontact with the upper surface of the said receptacle.

In the base or bottom 27 of the inner receptacle 32, around the shaft25, an annular undercut recess 34 is formed, which recess is connectedbya horizontal channel 35 with the outlet-spout 23, and near one sidewall of the inner receptacle a second channel 36 is formed in the baseof the inner receptacle, which channel leads downward into the spacebetween the bottom of the drum and its flange 22, whereby any materialdelivered through this channel 36 finds an exit through the spout 24.

The quantity of liquid escaping through the channel 36 may be regulatedby a setscrew 51, passed through the base or bottom of the innerreceptacle at the under side into the channel, as shown in Fig. 3.

A wing 38 is fastened to the conical shafthead at the top and to theannular extension 27 at the bottom, the outer longitudinal edge of whichwing snuglyfits the side wall of the inner receptacle, and the wing isso recessed upon its inner longitudinal edge that a space is formedbetween it and the shaft 25, as shown in Fig. 1.

The perpendicular position of the wing is ber it is caughtby the wingand given the same speedy revolving motion as the inner receptacle,and,as the outlet milk-channel is upon the opposite side of the wing themilk is com pelled to pass almost the entire circumference of the innerreceptacle before it reaches this channel.

Motion is communicated to the shaft 25 by means of the followinggearing: Upon the rear of the standard 11, near the top, a largebevel-gear drive-wheel 39 is mounted, saidwheelhavingahandleattachedthereto,whereby the said drive-wheel acts inthe capacity of a hand-wheel. In the lower portion of the standard 11 ashaft 40 is journaled at about an angle of forty-five degrees to theperpendicular shaft 25, and this shaft extends beyond the front and rearof the standard and is provided at the rear end with a bevel-pinion 41,meshing with the teeth of the drivewheel 39. At the forward extremity ofthis shaft a second bevel-pinion 42 is rigidly secured, and above thepinion 42 a friction-; wheel43 is attached. Two brackets 44 and 45 aresecured to the base and arranged to extend upwardat an inclination indirection of the shaft 25, and in each of the brackets a shaft(designated, respectively, as 46 and 47) is journaled at an angle offorty-five degrees to the perpendicular shaft 25, the lower ends of theshafts 46 and 47 being journaled in the base, and upon each of saidshafts at or near their lower extremities a bevel-pinion 48 is secured,while above each of the said bevel-pinions a friction-wheel 49 isattached. The friction-wheels are all of the same size and are socentered that each wheel will bear equally upon the bevel-surface of thefrictionpinion 26, attached to the lower extremity of theperpendicularshaft 25. Each pinion 42 and 48 secured to the lower shaft is made tomesh with the pinion 50, journaled in suitable bearings upon the base.

In operation when the drive-wheel 39 is revolved motion is communicatedto the inclined shaft 40 through its gearing and through the base-gear50 to the several inclined base-shafts 46 and 47, also through themedium of the several friction-wheels 43 and 49 to the upright shaft 25,whereby the inner receptacle 32 may be rapidly rotated in the outerreceptacle 16. The milk is placed in the can 14 and permitted toflowinto the neck of the drum 16, from whence it passes through thespout 19 into the spreader-chamber 29, and from thence through thedownwardlyinclined spouts 30 into the inner revolving receptacle. Bymeans of the rapid rotary motion of the inner receptacle the milk isthrown in contact with the walls of the said receptacle and finds anexit through the channel 36 and the spout 24, while the cream, beinglighter than the milk, is made to collect around the shaft, whereuponthe cream, grad ually working downward, enters the undercut recess 34,and passes from thence through the channel 35 out through the spout 23.

It is evident that the interior chamber or receptacle may be readilycleaned at any time, as when the top or cover 17 is removed from thedrum 16 and the nut 33 unscrewed from connection with the shaft theinner receptacle may be withdrawn, thereby exposing every portion of thebase of said receptacle containing the channels, and likewise thespreader-chamber; and, if it is necessary to gain better access to thevarious parts, the pinion 26 may be detached from the shaft, and theentire shaft withdrawn from its bearings.

Having thus described our invention, we claim as new, and desire tosecure by Letters Patent- 1. In a cream-separator, the combination, witha rotary chamber and a shaft connected with said chamber provided with abevel friction-pinion, of a drive-wheel, shafts journaled at an angle tosaid drive-wheel, one of which shafts is provided with a gear at theupper end meshing with the drive-wheel, a bevelpinion journaled beneaththe friction-pinion of the shaft, pinions journaled upon each of theinclined shafts and meshing with the said central pinion, and afriction-wheel secured upon each of the said inclined shafts centered toengage with the inclined surface of the beveled shaft pinion,substantially as shown and described.

2. In a cream-separator, the combination, with a drum provided with aconical bottom, an inwardly-extending interior flange, and a spoutleading from one side above the flange and from the other side below theflange, of a shaft held to revolve in said drum, provided with a conicalhead bored to form aspreaderchamber, a base-plate integral with theshaft above the flange, provided with a central undercut recess, achannel leading from this recess into one of the spouts, and a secondchannel leading from the top of the baseplate to the bottom andconnecting with the other spout, and an interior bottomless receptacleengaging with the upper surface of the said base-plate, all combined foroperation substantially as shown and described.

3. In a creamseparator, the combination, with a drum provided with aconical bottom, an annular upwardly-inclined interior flange above thebottom, a spout leading outward from the space between the bottom andthe flange, a second spout projected from one side immediately above theflange, a removable cover provided with an exterior neck, and adownwardly-extending spout within the neck, of a shaft held to revolvein the drum, a base-plate integral with the shaft located immediatelyabove the flange of the drum, the said base-plate being provided with acentral undercut recess, a horizontal channel leading from said recessand connecting with the upper spout, an angular channel leading from thetop of the projection through to the bottom and connecting with thelower spout, a check-valve connected with the latter channel, a conicalhead formed integral with the upper extremity of the shaft providedwitha conical chamber and outlets from the base of said chamber, abottomless inner receptacle supported by the base-plate and engagingwith the head, and a lock-nut binding the said inner receptacle to thehead of the shaft, substantially as and for the purpose specified.

CARL ALRIOK I-IULT. OSCAR WVALFRID I-IULT. Witnesses for Carl AlrickHnlt:

P. HEADBURG, R. FRANKE. \Vitnesses for Oscar \Valfrid Hult:

E. M. CLARK, C. SEDGWICK.

